Hi!

Someone left their dying plant in the windowsill by my desk at work. When it first got up there the leaves were limp but, since the window gets a lot of sun, the plant dried up and the leaves are now crispy. I watered it and took it to a more shaded area but is the plant a goner/should I remove the crispy leaves? I know it's difficult to tell from the images but most of the leaves are very brittle and dry and one seems to have a dark spot on it. Is there any way to revive the plant or make it a little healthier?